Evaluation of high rate ponds operational and design strategies for algal biomass production and domestic wastewater treatment

2021 ◽  
pp. 148362
Author(s):  
Eduardo Couto ◽  
Maria Lúcia Calijuri ◽  
Paula Assemany ◽  
Paulo Roberto Cecon
Keyword(s):  
Wastewater Treatment ◽  
Biomass Production ◽  
Algal Biomass ◽  
Domestic Wastewater ◽  
High Rate ◽  
Design Strategies ◽  
Domestic Wastewater Treatment

Evaluation of flocculation and dissolved air flotation as an advanced wastewater treatment

2001 ◽  
Vol 43 (8) ◽  
pp. 83-90 ◽  
Author(s):  
A. C. Pinto Filho ◽  
C. C. Brandão
Keyword(s):  
Wastewater Treatment ◽  
Domestic Wastewater ◽  
High Rate ◽  
Advanced Treatment ◽  
Dissolved Air Flotation ◽  
Anaerobic Reactor ◽  
Treatment Processes ◽  
Domestic Wastewater Treatment ◽  
Air Flotation ◽  
Dissolved Air

A bench scale study was carried out in order to evaluate the applicability of dissolved air flotation (DAF) as an advanced treatment for effluents from three different domestic wastewater treatment processes, namely: (i) a tertiary activated sludge plant ; (ii) an upflow sludge blanket anaerobic reactor (UASB); and (iii) a high-rate stabilization pond.

High rate domestic wastewater treatment at 15 °C using anaerobic reactors inoculated with cold-adapted sediments/soils – shaping robust methanogenic communities

2019 ◽  
Vol 5 (1) ◽  
pp. 70-82 ◽  
Author(s):  
Evangelos Petropoulos ◽  
Yongjie Yu ◽  
Shamas Tabraiz ◽  
Aminu Yakubu ◽  
Thomas P. Curtis ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Low Temperature ◽  
Domestic Wastewater ◽  
High Rate ◽  
Cold Adapted ◽  
Anaerobic Reactors ◽  
Domestic Wastewater Treatment

To choose the reactor format in which to employ a low temperature adapted seed for wastewater treatment, we compared a UASB and an AnMBRUASB (UF)reactor at low HRT and temperature (15 °C).

Nitrous oxide (N2O) emissions during real domestic wastewater treatment in an outdoor pilot-scale high rate algae pond

2019 ◽  
Vol 44 ◽  
pp. 101670 ◽  
Author(s):  
Maxence Plouviez ◽  
Paul Chambonnière ◽  
Andy Shilton ◽  
Michael A. Packer ◽  
Benoit Guieysse
Keyword(s):  
Nitrous Oxide ◽  
Wastewater Treatment ◽  
Domestic Wastewater ◽  
Pilot Scale ◽  
High Rate ◽  
N2o Emissions ◽  
Domestic Wastewater Treatment

Ciprofloxacin removal during secondary domestic wastewater treatment in high rate algal ponds

Chemosphere ◽  
2017 ◽  
Vol 180 ◽  
pp. 33-41 ◽  
Author(s):  
Andrea Hom-Diaz ◽  
Zane N. Norvill ◽  
Paqui Blánquez ◽  
Teresa Vicent ◽  
Benoit Guieysse
Keyword(s):  
Wastewater Treatment ◽  
Domestic Wastewater ◽  
High Rate ◽  
High Rate Algal Ponds ◽  
Domestic Wastewater Treatment ◽  
Ciprofloxacin Removal

scholarly journals Evaluating the sustainability of waste substrates for microalgal biomass production using different modes of cultivation

2018 ◽  
Author(s):  
◽  
Prathana Ramsundar
Keyword(s):  
Wastewater Treatment ◽  
Biomass Production ◽  
Bacterial Load ◽  
Biomass Productivity ◽  
Domestic Wastewater ◽  
Microalgal Biomass ◽  
Domestic Wastewater Treatment ◽  
Cultivation Strategy ◽  
Production Strategy ◽  
Pre Treatment

The utilization of wastewater as a substrate for microalgal biomass cultivation is one of the few potentially viable routes for fuel and feed applications. In this study, the suitability of various liquid wastewater streams and waste biosolids from a domestic wastewater treatment plant was assessed for microalgal cultivation. The wastewater substrates were analyzed for nutrient content as a potential growth medium. For liquid waste substrates, physical, thermal and biological pre-treatment methods were evaluated to minimize the bacterial load. Biomass, physiology, nutrient removal efficiencies and biochemical constituents of Chlorella sorokiniana were investigated in influent (INF) and anaerobic tank centrate (AC) under mixotrophic (Mixo) and heterotrophic (Hetero) cultivation modes. Mixotrophic cultivation conditions demonstrated efficient ammonium (94.29%) and phosphate (83.30%) removal with promising biomass (77.14 mgL-1d-1), lipid (24.91 mgL-1d-1), protein (22.36 mgL-1d-1) and carbohydrate (20.10 mgL-1d-1) productivities. Urea supplementation (1500 mgL-1) further enhanced biomass (162.50 mgL-1d-1), lipid (24.91 mgL-1d-1), protein (22.36 mgL-1d-1) and carbohydrate (20.10 mgL-1d-1) productivities in Mixo AC. Therefore, the urea supplemented Mixo AC approach for microalgal cultivation was developed as a suitable biomass production strategy. This work also elucidated a novel algae cultivation strategy for utilisation of waste biosolids, where nutrient-rich waste activated sludge (WAS) and final effluent (FE) from the wastewater treatment process was used for microalgal biomass generation. This strategy reduced the use of synthetic nutrients, fertilizers and freshwater which contribute significantly towards the overall cost of biomass production. Strategy development included the investigation of physical, thermal and chemical pre-treatment methods to assist in effective nutrient release and bacterial load reduction. Evaluation of growth kinetics, photosynthetic performance, nutrient removal efficiencies and biochemical composition of microalgae under mixotrophic and heterotrophic modes of cultivation were performed. Furthermore, urea supplementation was studied to improve biomass productivity. Microalgae cultivation in acid pre-treated (pH 2) WAS + FE with urea supplementation (1500 mgL-1) showed enhanced biomass productivity of 298.75 mgL-1d-1. Microalgal biomass grown with WAS + FE using the developed strategy exhibited greater lipid (72.95 mgL-1d-1) and protein (72.84 mgL-1d-1) productivities and comparable carbohydrate yields (73.07 mgL-1d-1) to that of synthetic media. Thus mixotrophic mode of cultivation coupled with urea supplementation to WAS + FE proved to be a suitable cultivation strategy for C. sorokiniana. The study developed an efficient strategy to utilize AC and WAS + FE as a growth medium for microalgae. Furthermore, findings from this study have demonstrated the potential of waste streams and waste solids from domestic wastewater treatment plants for microalgal biomass generation

scholarly journals Algal biomass production and wastewater treatment in high rate algal ponds receiving disinfected effluent

2013 ◽  
Vol 34 (13-14) ◽  
pp. 1877-1885 ◽  
Author(s):  
Aníbal Fonseca Santiago ◽  
Maria Lucia Calijuri ◽  
Paula Peixoto Assemany ◽  
Maria do Carmo Calijuri ◽  
Alberto José Delgado dos Reis
Keyword(s):  
Wastewater Treatment ◽  
Biomass Production ◽  
Algal Biomass ◽  
High Rate ◽  
High Rate Algal Ponds

Domestic wastewater treatment and biofuel production by using microalga Scenedesmus sp. ZTY1

2014 ◽  
Vol 69 (12) ◽  
pp. 2492-2496 ◽  
Author(s):  
Tian-Yuan Zhang ◽  
Yin-Hu Wu ◽  
Hong-Ying Hu
Keyword(s):  
Wastewater Treatment ◽  
Biomass Production ◽  
Wastewater Treatment Plant ◽  
Removal Rate ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Dry Weight ◽  
Biofuel Production ◽  
Domestic Wastewater Treatment ◽  
High Removal Rate

Cultivation of microalgae for biomass production is a promising way to dispose of wastewater and recover nutrients simultaneously. The properties of nutrient removal and biomass production in domestic wastewater of a newly isolated microalga Scenedesmus sp. ZTY1 were investigated in this study. Scenedesmus sp. ZTY1, which was isolated from a wastewater treatment plant in Beijing, grew well in both the primary and secondary effluents of a wastewater treatment plant during the 21-day cultivation, with a maximal algal density of 3.6 × 106 and 1.9 × 106 cells · mL−1, respectively. The total phosphorus concentrations in both effluents could be efficiently removed by over 97% after the cultivation. A high removal rate (over 90%) of total nitrogen (TN) was also observed. After cultivation in primary effluent for 21 days, the lipid content of Scenedesmus sp. ZTY1 in dry weight had reached about 32.2%. The lipid and triacylglycerol (TAG) production of Scenedesmus sp. ZTY1 was increased significantly with the extension of cultivation time. The TAG production of Scenedesmus sp. ZTY1 increased from 32 mg L−1 at 21 d to 148 mg L−1 at 45 d in primary effluent. All the experiments were carried out in non-sterilized domestic wastewater and Scenedesmus sp. ZTY1 showed good adaptability to the domestic wastewater environment.

scholarly journals Escherichia coli removal during domestic wastewater treatment in outdoor high rate algae ponds: long-term performance and mechanistic implications

2020 ◽  
Vol 82 (6) ◽  
pp. 1166-1175
Author(s):  
Paul Chambonniere ◽  
John Bronlund ◽  
Benoit Guieysse
Keyword(s):  
Escherichia Coli ◽  
Wastewater Treatment ◽  
Cell Count ◽  
Domestic Wastewater ◽  
Decay Rates ◽  
Coli Cell ◽  
High Rate ◽  
Operational Parameters ◽  
E Coli ◽  
Domestic Wastewater Treatment

Abstract Escherichia coli (E. coli) first-order decay rates ranging from 3.34 to 11.9 d−1 (25–75% data range, N = 128) were recorded in two outdoor pilot-scale (0.88 m3) high rate algal ponds (HRAPs) continuously fed primary domestic wastewater over two years (influent E. coli cell count of 4.74·106 ± 3.37·106 MPN·100 mL−1, N = 142). The resulting removal performance was relatively constant throughout the year (log10-removal averaging 1.77 ± 0.54, N = 128), apart from a significant performance drop during a cold rainy period. E. coli removal performance was not strongly correlated to any of the meteorological or operational parameters recorded (e.g. sunlight intensity, pH, temperature). Hourly monitoring of E. coli cell count evidenced that E. coli removal, pH, dissolved oxygen (DO) and pond temperature peaked in the late afternoon of sunny summer days. Such improved daytime removal was, however, not evidenced in spring, even under sunny conditions causing milder increases in pH, DO and temperature. Overall, the data confirm the potential of HRAPs to support efficient E. coli removal during secondary domestic wastewater treatment and suggests E. coli decay was mainly caused by dark mechanisms episodically enhanced by indirect sunlight-mediated mechanisms and/or high pH toxicity.

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